Zhentiw - 博客园

2021年5月5日

[Typescript] Prevent Type Widening of Object Literals with TypeScript's const Assertions

摘要： A const assertion is a special type assertion that uses the const keyword instead of a specific type name. When using a const assertion on an object l 阅读全文

posted @ 2021-05-05 15:22 Zhentiw 阅读(84) 评论(0) 推荐(0)

[AWS] Updating Elastic Beans Talks & RDS

摘要： All at once Deploys to all instances simultaneously. You will experience a total outage. Not ideal for mission-critical production system. Rolling bac 阅读全文

posted @ 2021-05-05 02:46 Zhentiw 阅读(65) 评论(0) 推荐(0)

2021年5月3日

[AWS DA Guru] Monitoring

摘要： CloudWatch Bascily you can use CloudWatch to monitoring everything in AWS. CloudWatch Logs allow you to monitor operating system and application logs. 阅读全文

posted @ 2021-05-03 14:57 Zhentiw 阅读(51) 评论(0) 推荐(0)

[AWS] Lab: Install CloudWatch Agent on EC2 instance

摘要： 1. Create a Role for CloudWatchAgent Create Role for `EC2` Service, attach prolicy 2. Create an EC2 instance Select the IAM role with the Role you jus 阅读全文

posted @ 2021-05-03 14:46 Zhentiw 阅读(113) 评论(0) 推荐(0)

2021年5月2日

[AWS Design Cost-Optimized Architectures] 4.2 Identify cost-effective compute and database services

摘要： RDS Scalabilty Scalabilty allows a solution to grow to increase storage, processing, memory, and netowrk operations By changing the class of an instan 阅读全文

posted @ 2021-05-02 17:12 Zhentiw 阅读(52) 评论(0) 推荐(0)

[AWS - Monitoring and Troubleshooting] 5.1 Write code that can be monitored

摘要： Trusted Advisor The trusted advisor is an AWS service that evaluates your environment and can provide recommendations for improvement Security improve 阅读全文

posted @ 2021-05-02 17:10 Zhentiw 阅读(54) 评论(0) 推荐(0)

[Tools] YAML

摘要： If you are new to YAML, here is a useful link to a blog on YAML. YAML tutorial Here is a free tool that was mentioned in the video that can convert YA 阅读全文

posted @ 2021-05-02 17:08 Zhentiw 阅读(51) 评论(0) 推荐(0)

[Lab] DymamoDB Pagination

摘要： If you send a GET request using this URL: https://{{apiId}}.execute-api.us-east-1.amazonaws.com/dev/groups?limit=2 you should get a reply like this: { 阅读全文

posted @ 2021-05-02 16:57 Zhentiw 阅读(89) 评论(0) 推荐(0)

[Typescript] Perform null Checks with Assertion Functions

摘要： In this lesson, we're going to look at how to perform null checks with assertion functions. We're going to assert that a nullable value doesn't hold t 阅读全文

posted @ 2021-05-02 01:54 Zhentiw 阅读(53) 评论(0) 推荐(0)

[Typescript] Narrow the unknown Type with TypeScript's Assertion Functions

摘要： This lesson introduces assertion functions which let us narrow the type of a variable or property for the remainder of the containing scope. We're goi 阅读全文

posted @ 2021-05-02 00:15 Zhentiw 阅读(58) 评论(0) 推荐(0)

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